A-LevelPhysicsDynamics9702/12 · Oct/Nov 2009 · Q91 Mark
A supermarket trolley, total mass 30 kg, is moving at 3.0 m s⁻¹. A retarding force of 60 N is applied to the trolley for 0.50 s in the opposite direction to the trolley's initial velocity. What is the trolley's new velocity after the application of the force?
A1.0 m s⁻¹
B1.5 m s⁻¹
C2.0 m s⁻¹
D2.8 m s⁻¹
✓ Correct answer
C: 2.0 m s⁻¹
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